Python exists示例

示例#1

 def test_readback(self):
     pipe = hdfs.HdfsAtomicWriteDirPipe(self.path)
     self.assertFalse(self.fs.exists(self.path))
     pipe.write(b"foo\nbar")
     pipe.close()
     self.assertTrue(hdfs.exists(self.path))
     dirlist = hdfs.listdir(self.path)
     datapath = '%s/data' % self.path
     returnlist = [d for d in dirlist]
     self.assertTrue(returnlist[0].endswith(datapath))
     pipe = hdfs.HdfsReadPipe(datapath)
     self.assertEqual(pipe.read(), b"foo\nbar")

示例#2

文件： hdfs_test.py 项目： rodrigorn/luigi

 def test_readback(self):
     pipe = hdfs.HdfsAtomicWriteDirPipe(self.path)
     self.assertFalse(self.fs.exists(self.path))
     pipe.write(b"foo\nbar")
     pipe.close()
     self.assertTrue(hdfs.exists(self.path))
     dirlist = hdfs.listdir(self.path)
     datapath = '%s/data' % self.path
     returnlist = [d for d in dirlist]
     self.assertTrue(returnlist[0].endswith(datapath))
     pipe = hdfs.HdfsReadPipe(datapath)
     self.assertEqual(pipe.read(), b"foo\nbar")

示例#3

文件： mr.py 项目： lqleeqee/avatar_jianyi

def check_mr_success(hdfs_dir):
        hdfs = luigi.contrib.hdfs.hadoopcli_clients.create_hadoopcli_client()
        return hdfs.exists('%s/_SUCCESS' % hdfs_dir)

示例#4

文件： mr.py 项目： lqleeqee/avatar

def check_mr_success(hdfs_dir):
        #create_hadoopcli_client ：
        #Given that we want one of the hadoop cli clients (unlike snakebite), this one will return the right one.
        hdfs = luigi.contrib.hdfs.hadoopcli_clients.create_hadoopcli_client()
        #Use hadoop fs -stat to check file existence.
        return hdfs.exists('%s/_SUCCESS' % hdfs_dir)